minor change to avoid confusion in ch2-5 (#310)

* minor change to avoid confusion

* added suggestion

chapters/en/chapter2/5.mdx

@@ -87,7 +87,7 @@ InvalidArgumentError: Input to reshape is a tensor with 14 values, but the reque
 
 Oh no! Why did this fail? "We followed the steps from the pipeline in section 2.
 
-The problem is that we sent a single sequence to the model, whereas 🤗 Transformers models expect multiple sentences by default. Here we tried to do everything the tokenizer did behind the scenes when we applied it to a `sequence`, but if you look closely, you'll see that it didn't just convert the list of input IDs into a tensor, it added a dimension on top of it:
+The problem is that we sent a single sequence to the model, whereas 🤗 Transformers models expect multiple sentences by default. Here we tried to do everything the tokenizer did behind the scenes when we applied it to a `sequence`. But if you look closely, you'll see that the tokenizer didn't just convert the list of input IDs into a tensor, it added a dimension on top of it:
 
 {#if fw === 'pt'}
 ```py